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Curr Biol 2021 Feb 26. Epub 2021 Feb 26.

Janelia Research Campus of the Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, VA 20147, USA. Electronic address:

In an elaborate form of inter-species exploitation, many insects hijack plant development to induce novel plant organs called galls that provide the insect with a source of nutrition and a temporary home. Galls result from dramatic reprogramming of plant cell biology driven by insect molecules, but the roles of specific insect molecules in gall development have not yet been determined. Here, we study the aphid Hormaphis cornu, which makes distinctive "cone" galls on leaves of witch hazel Hamamelis virginiana. Read More

PLoS One 2021 3;16(3):e0247779. Epub 2021 Mar 3.

ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad, Telangana, India.

Variance and covariance components of growth and production traits were analyzed employing REML animal model to assess the Dahlem Red (PD-3) chicken population for direct additive genetic, maternal effects and to estimate the estimated breeding value (EBV), genetic parameters, genetic trends and rate of inbreeding (ΔF) utilizing seven generation's data. The generation and hatch had significant (P≤0.01) effect on the body weight at 0 day (BW0), 2 (BW2), 4 (BW4) and 6 weeks (BW6) and shank length at six weeks of age (SL6). Read More

Curr Protoc 2021 Mar;1(3):e57

Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona.

Azotobacter vinelandii (A. vinelandii) is a commonly used model organism for the study of aerobic respiration, the bacterial production of several industrially relevant compounds, and, perhaps most significantly, the genetics and biochemistry of biological nitrogen fixation. Laboratory growth assessments of A. Read More

Alzheimers Dement 2021 Mar 3. Epub 2021 Mar 3.

Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.

Introduction: Whether depression is a prodromal phase or risk factor for dementia is under debate. We aimed to unveil the nature of depression-dementia association by looking into the time window of depression occurrence.

Methods: Dementia-free twins (n = 41,727) from the Swedish Twin Registry were followed-up for 18 years. Read More

Aging Cell 2021 Mar 3:e13320. Epub 2021 Mar 3.

Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, Cologne, Germany.

Aging clocks dissociate biological from chronological age. The estimation of biological age is important for identifying gerontogenes and assessing environmental, nutritional, or therapeutic impacts on the aging process. Recently, methylation markers were shown to allow estimation of biological age based on age-dependent somatic epigenetic alterations. Read More